英语语法分析

Objective to make a further understanding of meningeal hemangiopericytoma.

目的提高对脑膜血管外皮瘤的认识。

Objective to make a further understanding of intracranial hemangiopericytoma.

目的提高对颅内血管外皮细胞瘤的认识。

Background and Objectives: Meningeal hemangiopericytoma is an uncommon tumor.

背景与目的：原发于脑脊膜的血管外皮瘤临床少见。